Genie TMZ-50/30 Service Manual page 60

Section 4 • Repair Procedures
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PLATFORM COMPONENTS
How to
Adjust the Platform Rotator
The platform rotator is designed to allow the
platform to slip in the event of striking an object to
help prevent damage to the platform. If the
platform rotator is too tight or seized, damage to
the platform may occur. If the platform rotator is
too loose, the platform may rotate side to side
unexpectedly, resulting in a unsafe operating
condition.
1 Raise the primary boom approximately
3 feet / 1 m.
2 Press the function enable button and the
platform level button in the down direction until
the platform is horizontal. Do not allow the
platform to contact the ground.
3 Remove the platform controls from the platform
control box mount. Release the clamp on the
back of the platform control box and slide the
controls up and off of the mount. Lay the
platform controls off to the side.
Component damage hazard.
Cables can be damaged if they
are kinked or pinched.
4 Remove the fasteners securing the platform box
mount and gearbox cover to the platform rotate
gearbox. Remove the mount and cover from
the gearbox.
5 Locate the gear assembly retaining nut on the
end of the platform pivot shaft. Loosen the nut
just enough to allow the handle to rotate.
6 Tighten the locknut. Torque to specification.
Torque specification
Gear assembly retaining nut, dry
7 Thoroughly grease the entire mechanical
platform rotator assembly.
8 Operate the platform rotator and check for
smooth operation.
4 - 6
How to
Service the Platform Rotator
1 Remove the platform. See 1-1,
How to Remove the Platform.
2 Remove the platform controls from the platform
control box mount. Release the clamp on the
back of the platform control box and slide the
controls up and off of the mount. Lay the
platform controls off to the side.
3 Remove the fasteners securing the platform
control box mount and gearbox cover to the top
of the gearbox case. Remove the mount and
cover.
4 Remove the four bolts securing the rotate
handle shaft cover to the gearbox.
5 Remove the rotate handle shaft and pinion from
the gearbox case.
6 Remove the gear assembly retaining nut from
the top of the shaft.
7 Disassemble the gear assembly.
8 Visually inspect the inside of the platform rotator
for the following items:
· Excessive wear
· Broken or damaged parts
· Rust or corrosion
· Binding
180 ft-lbs ±5 ft-lbs
244 Nm ±7 Nm
TMZ-50/30
June 2005
Component damage hazard.
Cables can be damaged if they
are kinked or pinched.
For ease of reinstallation, note the
removal order of each gear
component.
If any parts are lightly rusted or
corroded, remove them and clean
rust or corrosion off with a wire
brush. If parts are worn, heavily
rusted or corroded, replace them.
Part No. 65162
REV B